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Ede4ka [16]
3 years ago
14

HURRY PLEASE I NEED A PARAGRAPH. Describe how cell membranes are selectively permeable.

Biology
1 answer:
Simora [160]3 years ago
4 0

Explanation:

Cell membranes are selectively permeable. Some solutes cross the membrane freely, some cross with assistance, and others do not cross at all. A few lipophilic substances move freely across the cell membrane by passive diffusion. ... Large molecules do not cross intact cell membranes, except in certain special cases.

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PLEASE HELP!! i need help with this for biology i’m desperate please
Vanyuwa [196]

As per the demonstration of Griffith and Avery, it can be concluded that the given experiment finding supports hypothesis III, i.e. genetic material or transforming substance is DNA.

<h3>What is Genetic material?</h3>

Genetic material may be defined as any substance found in the cells of plants, animals, microbial or other origins that hold genetic information and that departs it from one generation to the next.

In 1944, Avery and others concluded that the transforming material was pure DNA, not protein or RNA.

These investigators found that DNA extracted from a virulent strain of the bacterium Pneumococcus genetically transformed an avirulent strain of the organism into a virulent form.

Therefore, as per the demonstration of Griffith and Avery, it can be concluded that the given experiment finding supports hypothesis III, i.e. genetic material or transforming substance is DNA.

To learn more about Griffith's experiment, refer to the link:

brainly.com/question/8950307

#SPJ1

7 0
2 years ago
What food starts with the sun and ends with humans
Nonamiya [84]

Answer:

hamburgers-

Explanation:

grass grows with the sun, cows eat the grass, the butcher kills the cows and made into beef which is made into burgers and cooked to eat in restaurants

8 0
3 years ago
Which pair shows the chromosome numbers in human cells both before and after meiosis?
VladimirAG [237]
Each chromosome has 46 in mitosis whereas meiosis has 23 pairs from each gametes (egg cells and sperm) from the parents which are called daughter cells so the answer is 23 and 23 one from the mother and the other from the father
4 0
3 years ago
The major disadvantage of a blood-brain barrier is that ____.​
aalyn [17]

<span>The answer is a certain required chemicals must be actively transported.  Blood brain barrier is a selective membrane that separates blood circulating from the brain and the fluid of extracellular in the central nervous system. This is also called a filtering mechanism, the capillaries that carry blood to the brain and spinal cord tissue blocking the path way of the certain substance.</span>

4 0
3 years ago
What is the last step of a scientific investigation?
aleksandr82 [10.1K]

Answer:

its c

Explanation:

communicating the result is significant to analyzing data

4 0
2 years ago
Read 2 more answers
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